| abstract |
(57) [Summary] [Purpose] To provide a belt with improved bending fatigue. [Structure] The toothed belt 1 has a glass cord as the core cord 3. The glass cord consists of resorcin-formaldehyde precondensate and rubber-reinforced glass fiber treated with a liquid containing latex as a main component. And, the number of glass filaments having a lower twist structure is 150 to 450. And the total number of filaments after twisting is 480 It is 0-8000. As a result, the impregnation state of the RFL into the glass cord is improved, the RFL is less hardened, and the bending fatigue resistance is improved. |